Car-brake.



P. BOCH.

CAR BRAKE.

APPLICATION r1150 JUNE 20. 1914.

PatentedSept. 7,1915.

3 SHEETS-SHEET] COLUMBIA PLANOGRAPH COQWASHINOTDN. D1 0 P. BOCH.

CAR BRAKE.

APPLICATION FILED JUNE 20. 1914.

Patented Sept. 7, 1915.

3 SHEETS-SHEET 3.

cpLuMBIA PLANOGRAPH c0.,wASHINGTuN. D. C-

, TED s'r'rs PATNT OFFICE.

IPHILIPI? IBQCI-I, on NEW YORK, 1v. Y., ASSIGNOR or ONE-HALF T PAULlemon, or

' NEW YORK, N. Y.

CAZREBRAKE.

Specification of Letters Patent.

PatentedSept. '7 1915,

Application filed June 20, 1914. Serial No. 846,304.

ToaZZ whom it may concern:

Be'it known that I, PHILIP]? BooH, a citizen of the United States ofAmerica, residing in New York, in the borough of Manhatta n, county andState of New York, have invented certain new and useful Improvements inCar-Brakes, of which the following IS aspeciiication.

This invention relates to a car brake embodying both wheel and railbrakes and mechanism for the simultaneous .operation thereof. 7

In the accompanying drawings, Figure 1 is a side elevation of a cartruck having applied thereto a brake embodying the invention, Fig. 2 isa top view of the same, Fig. 3 is a vertical longitudinal section online 3-3, Fig. 2, Fig. 4 is a similar section showing the parts in adifferent position, Fig. 5 is a vertical section on line 55, Fig. 1,Fig. 6 is a top view on a larger scale showing the means of mounting andguiding the railshoes, and Fig. 7 is a vertical section on line 77 ofFig. 6.

Similar reference numerals indicate the same parts in the variousfigures.

A main supporting cross-bar 10 is carried at its ends on the side'frames11, 12, of the car truck. On suitable gudgeons 13, projecting inwardlyfrom the side frames, are pivoted links 14 which support independentlythe wheel brake-shoes 15, 16, 17 18, in proper position for being swung,each pair in opposite directions, into and out of contact with thewheels 19, 20, 21, 22, respectively. Guided in the cross bar 10 are twovertically movable rods 23, 24, which have at their lower endssupporting cross-pieces 25, 26. 011 said cross-pieces or feet 25, 26,rest two connecting links 27 28, which extend transversely of the truckand are pivoted at their ends to pillowblocks29, and 30. To thepillow-blocks 29 and 30 are piv oted the rail brake-shoes 31, 32. Saidrail brake-shoes are provided with laterally extending guide-pins 33,84, which are guided vertically betweenguide lugs on the side frames ofthe car truck. Said pins, as shown, haveconsiderable play between saidlugs, and this, combined with the play which exists between the innerfaces of the lugs and the railshoes,- permits lateral movement of thebrake-shoes as well as slight angular displacement of the same out oftrue alinement between the wheels, which movement is advantageous forriding obstructions upon, or inequalities in the rail surface,

at each end wedge-shaped member, said.

members 42 and 43 carrying each at its lower portion two spacedantifriction rollersv 42' and 43 adapted to bear against the convergingrear faces 44 of the Wh elshoes. The two brake-beams arein proximitytransversely of the car truck. Between the same a located two wedges4.5, 46, one at each s1 e.

The wheel brake beam 41 and the rail brake beam engage attheir oppositeends the vertical guide ways 35 at opposite sides of the truck, and aremovable vertically in said guide ways, being disposed onev above theother. The rail brakebea'm 41 is. pro= vided on its lower side withantifriction roll= ers 47 disposed near opposite sides of the truckinside the wheel-shoe actuating members 42 and 43 and the rail brakebeam 40 is provided with antifriction rollers 47 disposed in verticalalinement with the antifriction rollers of the wheel brake beam 41, andthe actuating wedges-45 and 46 slide between said rollers 47 and 47-.

7 When it is desired to apply the brak s. the brake-rod 52 is moved inthe direction of the arrow in Fig. 1, Thereby the wedges 45, 46, areadvanced between the brake-v beams and the wheel brake-beam is elevated,while the rail brake-beam isloweredr intermediate position in which thebrakes arenot fully applied, as shown in Fig. 3. In Fig. 4 the wedgesare still. further advanced and the brakes are thereby fully applied,the wheel brake beam 41 beingso far lifted as to bring its wedge-members42, 48, which preferably carry contact rollers42 and 43", into forciblecon-tact with the converging rear faces of the wheel shoes, therebyforc+ ing-themapart and against the wheels while the lower ,nailbrake-beam 40 is sofarde re racting springs, 11 the ro s 23.;-

29 and 30 and thereby the rail-shoes until the latter are in strongfrictional .contact with the rail. Thus, both brakes are simultaneouslyapplied. For releasing the brakes, the brake-rod 52 is moved in theopposite direction, thereby the wedges are forced back, that is to say,outwardly from between the brake-beams, whereby the beams are permittedto come together, which they do reliably under the tension of theretractingsprings 36, 37, and all the parts resume their former positionshown in Fig. 1.

In order that the springs 36, 37, shall not,by their lifting action whenthe brake is off, continue to lift the wheel brake-beam to such anextent as to apply the wheel brake-shoes, which would be the case werethe upward movement of the brake-beams unlimited, arresting springs 54,55, are employed which are located between the main cross-bar 10 and thebrake-beam 41. By their compression they serve to limit the upwardmovement of the parts at such point that the wheel shoes have noeffective pressure on the wheels when the brake is off.

The brake described provides effective, reliable, and durable means forquickly arresting the movement of cars.

One embodiment of the invention has been described, but. it is obviousthat changes may be made therein without departing from the spirit ofthe invention.

I claim:

1. A car-brake comprising a main supporting cross-bar secured at itsends to the car truck, wheel brake-shoes between the truck wheels, saidwheel brake-shoes having opposed converging rear faces, rail brakeshoesone at each side of the truck between the wheel brake-shoes, a wheelbrake-beam having at each end a wedge-shaped member adapted when thebeam is moved to engage the converging faces of the wheel brakeshoes andforce them against the wheels, a

rail brake-beam movable in opposite direction to the wheel brake-beamfor applying the rail brake-shoes, and means for moving said brake-beamssimultaneously in opposite directions.

2. A car-brake comprising a main supporting cross-bar secured at itsends to the car truck, wheel brake shoes between the truck wheels, saidwheel brake-shoes having opposed converging rear faces, rail brakeshoesone at each side of thetruck between the wheel brake-shoes, a wheelbrake-beam having at each end a wedge-shaped member adapted when thebeam is moved to engage the converging faces of the wheel brakeshoes andforce them against the wheels, a rail brake-beam movable in oppositedirection to the wheel brake-beam for applying the rail brake-shoes,means for moving said brake-beams simultaneously iii-oppositedirections, and means for returning the brake beams toward each otherfor releasing the shoes. r V

3. The combination of a truck frame provided with vertical guideways onits opposite sides, pillow blocks disposed at opposite sides of saidtruck and provided with guide studs loosely engaging said guideways,transverse links pivoted to opposite ends of said pillow blocks, railbrakes pivoted to said pillow blocks, a brake beam engaging said pillowblocks, and means for lifting and lowering said brake beam to set andrelease said brakes.

l. The combination of a truck frame provided with vertical guideways onits opposite sides, pillow blocks disposed at opposite sides of saidtruck frame and provided with guide studs loosely engaging saidguideways, transverse links pivoted to the opposite ends of said pillowblocks, rail brakes pivoted to said pillow blocks, yielding supports forsaid links, a vertically sliding brake beam engaging said guideways andmeans for depressing said sliding brake beam for settingthe rail brakes.

The combination of a truck frame provided with vertical guideways on itsopposite sides, pillow blocks disposed at opposite sides of' said truckand provided with guide studs loosely engaging said guideways,transverse links pivoted to opposite ends of said pillow blocks, railbrakes pivoted to said pillow blocks, yielding supports for said links,a vertically sliding brake beam engaging said guideways and means fordepressing said sliding brake beam for setting the rail brakes.

6. A car brake comprising a main supporting cross-bar secured at itsends to the car-truck, wheel-brake-shoes between the truck-wheels, saidwheel brake shoes having opposed converging rear faces, rail-brakeshoes,one at each side of the truck between the wheel-brake-shoes, awheel-brake-beam having at each end a wedge-shaped member carryingspaced antifriction rollers adapted when the beam is raised to engagethe converging faces of the wheel-brake shoes and force them against thewheels, a rail-brakebeam, upwardly spring-actuated rods guided in thecross-bar and extendingthrough the brake-beams and having below therailbrake-beam spaced supporting members, links supported on saidmembers, pillowblocks one at each side pivoted to the railbrake-shoe,said'links being pivoted to said pillow-blocks, an antifriction rollercarried by each pillow block between the same and the rail-brake beam,operating wedges between the brake beams, brake-levers connected withsaid wedges, and an operating rod connected with said levers.

7 The combination of a truck frame having vertical guideways at itsopposite sides, transverse brake beams disposed one above the other andmovable upward and down- 10 and a wedge mechanism movable between saidbrake beams for simultaneously setting them.

In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two subscriblng witnesses.

PHILIPP BOOH.

Witnesses:

F. Hoes, Jos. BISBANO.

Copies of this patent may be obtained for five cents each,' byaddressing the Commissioner of Patents, Washington, D. G.

